How to Save Editting at GRUB 1.97 beta4 Boot

[huangyingw]

hello
I want to realize such purpose:
Install Ubuntu 9.10 on a removalble USB disk, and then, just simply carry this usb disk to everywhre. So, I could use a same OS, no matter at home or office.
After installation of Ubuntu 9.10 on my targeted USB disk from my laptop, I unplug and plug this USB disk to my PC. After choosing boot from USB,I could successfully load the GRUB menu.
But when I choose "Ubuntu, linux....", my PC could not successfully boot to Ubuntu. I guess it might be something wrong with this section
set root=(hd0,1). So, I press 'e' at my target option, and entered the edit mode of GRUB.
But, I don't know how to save my editting.
And what's more, I am not sure whether this would works, after updating my grub.
Could someone share his successful experience at this point?

[kansasnoob]

Several options:

http://www.pendrivelinux.com/

Personally I don't care to use grub2 on external drives, I always revert to legacy grub because grub2's ability to probe all OS's bugs me:

http://ubuntuforums.org/showthread.php?t=1298932

Alternatively you can tweak grub2:


# Building a Totally Customized Menu: Ok, admit you are a control freak and you want to see only what you build yourself - customized titles, no "memtest86+" and no extra kernels. Here is how you do it:

* Run sudo update-grub to get the current available kernels.
* Copy the desired "menuentry" listings from /boot/grub/grub.cfg to /etc/grub.d/40_custom The entry begins with the line starting with "menuentry" and ends with a line containing "}".
* Add any other "menuentry" items you wish to see on the boot menu.
* Edit the titles of the "menuentry" line if desired (between the quotation symbols). Do not change the lines following the "menuentry" line. Each entry should start with a "menuentry" line and end with a "}" on the last line.
* Remove the executable bit from /etc/grub.d/10_linux, /etc/grub.d/20_memtest86+ and /etc/grub.d/30_os-prober
Removing the executable bit from any file in /etc/grub.d will exclude the file from being included in grub updates.
Code:

sudo chmod -x /etc/grub.d/10_linux /etc/grub.d/20_memtest86+ /etc/grub.d/30_os-prober

* Run "sudo update-grub"
* The updated /boot/grub/grub.cfg file should now contain only sections for "00_header", "05_debian_theme" and "40_custom".
* The grub.cfg file will not be updated with the addition of a new kernel. To add a new kernel, make "10_linux" executable, run "sudo update-grub" to refresh the available kernels, and repeat these instructions.


http://ubuntuforums.org/showthread.php?t=1195275

[brickhead248]

what i would do is:

boot ubuntu off a live CD

run the command sudo fdisk -l in the terminal to determine the name of your USB drive (should be something like sdc1)

browse the USB disk and find the file menu.lst (if i recall correctly, it should be under [USB device directory]/boot/grub)

back up the menu.lst file

change the entry for the ubuntu boot option from root (hd0,0) to root (sdc1,0) [assuming that is the name of your USB disk]

good luck!

[brickhead248]

what i would do is:

boot ubuntu off a live CD

run the command sudo fdisk -l in the terminal to determine the name of your USB drive (should be something like sdc1)

browse the USB disk and find the file menu.lst (if i recall correctly, it should be under [USB device directory]/boot/grub)

back up the menu.lst file

change the entry for the ubuntu boot option from root (hd0,0) to root (sdc1,0) [assuming that is the name of your USB disk]

good luck!
disreagard what i just said, i dont think it would work as grub has a different naming system to unix. SORRY

[huangyingw]

Several options:

http://www.pendrivelinux.com/

Personally I don't care to use grub2 on external drives, I always revert to legacy grub because grub2's ability to probe all OS's bugs me:

http://ubuntuforums.org/showthread.php?t=1298932

Alternatively you can tweak grub2:



http://ubuntuforums.org/showthread.php?t=1195275
Thank you for providing so much about GRUB2 and the detail about pendirvelinux.
I would prefer to try pendrivelinux first, to see what excitements it would provide to me..

[huangyingw]

disreagard what i just said, i dont think it would work as grub has a different naming system to unix. SORRY
thank still, this might not works for GRUB2.

[huangyingw]

Several options:

http://www.pendrivelinux.com/

Personally I don't care to use grub2 on external drives, I always revert to legacy grub because grub2's ability to probe all OS's bugs me:

http://ubuntuforums.org/showthread.php?t=1298932

Alternatively you can tweak grub2:



http://ubuntuforums.org/showthread.php?t=1195275
Hi, jus to make sure I totally understand what is described in pendrive.com. I found that the pendrive's information are all about how to make a usb-boot live CD, but no information on how to install running, and maintain a linux OS in a usb disk.